October 2025 APCA MARKET PENETRATION RESEARCH www.ContinuumCapital.net Study Era’s Defined (1 of 4) Phase 1 – 2000 to 2007; Phase 2 – 2008 to 2019; Phase 3 – 2020 to Present 34 Interpretive Note: Union and Merit Shop Workforce size lines are not stacked. Source: Propriety Continuum analysis and modeling of workforce size; Propriety Continuum analysis of PHMSA raw data, . 9.4% 15.6% 8.8% 13.3% 56.5% 49.4% 43.3% 29.9% 30.9% 48.6% 25.4% 21.0% 90.6% 84.4% 91.2% 86.7% 43.5% 50.6% 56.7% 70.1% 69.1% 51.4% 74.6% 79.0% 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 Mileage Workforce Size Gas T, HL, & Gath. Mileage Union Workforce Size Merit Workforce Size Phase 1 – 2000 to 2007 Phase 2 – 2008 to 2019 Phase 3 – 2020 to Present
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